20100043124111 has 16 divisors (see below), whose sum is σ = 20184680355840. Its totient is φ = 20015540490240.

The previous prime is 20100043124099. The next prime is 20100043124153. The reversal of 20100043124111 is 11142134000102.

It is a cyclic number.

It is not a de Polignac number, because 20100043124111 - 2¹⁰ = 20100043123087 is a prime.

It is a super-2 number, since 2×20100043124111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100043124171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1706714255 + ... + 1706726031.

It is an arithmetic number, because the mean of its divisors is an integer number (1261542522240).

Almost surely, 2^{20100043124111} is an apocalyptic number.

20100043124111 is a deficient number, since it is larger than the sum of its proper divisors (84637231729).

20100043124111 is a wasteful number, since it uses less digits than its factorization.

20100043124111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16894.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20100043124111 its reverse (11142134000102), we get a palindrome (31242177124213).

The spelling of 20100043124111 in words is "twenty trillion, one hundred billion, forty-three million, one hundred twenty-four thousand, one hundred eleven".